š Product Overview
The XL-A524SURUBW from XINGLIGHT is a 5mm F5 diffused bi-color LED that integrates independent Red (630ā640nm) and Blue (460ā475nm) chips into a common cathode package. This component is specifically engineered to provide high luminous intensity (up to 700mcd for Red and 1800mcd for Blue) with a wide viewing angle of 30 degrees, making it suitable for status indication and aesthetic backlighting. š” Its diffused lens effectively softens the light output, ensuring uniform color mixing in compact indicator modules.
Targeting automotive interiors and consumer electronics, the device operates efficiently on low-voltage DC drive. Designers utilizing this model should prioritize the independent forward voltage requirements (1.8Vā2.4V for Red, 2.8Vā3.4V for Blue) when designing driver circuits to ensure balanced brightness between the two colors.
š§ Typical Applications
Based on the F5 diffused package characteristics and dual-color configuration, the XL-A524SURUBW is optimized for the following scenarios:
- Automotive Interior Lighting: Dashboard illumination and center console indicators where diffused, soft light is required.
- Status & Signal Indication: Industrial control panels and appliance feedback systems requiring clear Red/Blue state differentiation.
- Backlight Modules: Used in LCD switches or symbol illumination due to its high intensity and foggy lens effect.
- Smart Home Devices: Integration into IoT hubs or smart switches for network pairing (Blue) or alert (Red) status.
š Key Technical Specifications
š” The following table outlines the initial electrical and optical characteristics under standard test conditions ($T_a=25^\circ C$). Consistency in mass production is controlled through specific binning codes provided in the detailed datasheet.
| Parameter | Symbol (Red/Blue) | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | $I_V$ (Red) | 400 | - | 700 | mcd | $I_F=20\text{mA}$ |
| $I_V$ (Blue) | 900 | - | 1800 | mcd | $I_F=20\text{mA}$ | |
| Dominant Wavelength | $\lambda_d$ (Red) | 630 | - | 640 | nm | $I_F=20\text{mA}$ |
| $\lambda_d$ (Blue) | 460 | - | 475 | nm | $I_F=20\text{mA}$ | |
| Forward Voltage | $V_F$ (Red) | 1.8 | - | 2.4 | V | $I_F=20\text{mA}$ |
| $V_F$ (Blue) | 2.8 | - | 3.4 | V | $I_F=20\text{mA}$ | |
| Viewing Angle | $2\theta_{1/2}$ | - | 30 | - | deg | $I_F=20\text{mA}$ |
| Reverse Current | $I_R$ | - | - | $\le 10$ | $\mu\text{A}$ | $V_R=5\text{V}$ |
ā ļø Absolute Maximum Ratings & Process Limits
š« Exceeding these parameters may result in permanent device failure. Design margins must account for the lower power dissipation of the Red chip (50mW) compared to the Blue chip (70mW).
| Parameter | Symbol | Red | Blue | Unit | Notes |
|---|---|---|---|---|---|
| Max Power Dissipation | $P_D$ | 50 | 70 | mW | |
| Max Continuous Forward Current | $I_F$ | 20 | 20 | mA | |
| Peak Forward Current | $I_{FP}$ | 80 | 80 | mA | Pulse width $\le 10\text{ms}$ |
| Operating Temperature | $T_{OPR}$ | -20 ~ +85 | $^\circ\text{C}$ | ||
| Storage Temperature | $T_{STR}$ | -40 ~ +85 | $^\circ\text{C}$ | ||
| Soldering Temp | $T_{SOL}$ | 260 (Max) | $^\circ\text{C}$ | Manual: $\le 3\text{s}$, Wave: $\le 240^\circ\text{C}$ |
ā ļø Critical Process Note: Ensure the soldering point maintains a distance of at least 2.0mm from the colloid bottom to prevent thermal damage to the epoxy resin during wave soldering.
š¦ Package, Dimensions & Assembly Notes
- Package Type: F5 Round (5mm diameter).
- Lens Material: Aerosol (Diffused/Foggy) Colloid.
- Dimensions: The total length is approximately 28mm with a bulb diameter of 5.0mm.
- Moisture Sensitivity: The device is classified as MSL 2. Components must be soldered within 1 year of opening the moisture barrier bag, or baking is required prior to reflow to prevent "popcorning."
- Assembly: Designed for standard Wave Soldering (max $240^\circ\text{C}$ for $\le 6\text{s}$) and Manual Welding.
š Sourcing & Supply Considerations
When procuring the XL-A524SURUBW, procurement teams should verify the specific Bin Codes (Brightness A5-E1, Voltage N12/N13, Wavelength HB/HR) to match the Bill of Materials (BOM) requirements for color consistency.
- Supply Chain: Verify that the stock is RoHS compliant and sourced through authorized channels to avoid mixed-bin shipments.
- Alternatives: When evaluating cross-references, ensure the diffused lens clarity matches the "Aerosol" specification to maintain the intended viewing angle.
- Sample Support: Request engineering samples for color temperature verification under specific automotive lighting conditions.
ā Frequently Asked Questions
Q: What is the voltage difference between the Red and Blue chips?
A: The Red chip has a forward voltage ($V_F$) range of 1.8V to 2.4V, while the Blue chip is higher, ranging from 2.8V to 3.4V. Driver circuits must accommodate these different voltage drops, typically requiring separate resistors for each color channel to control current accurately.
Q: Can this LED be used in outdoor environments?
A: While the operating temperature range extends to $+85^\circ\text{C}$, the datasheet does not specify an IP (Ingress Protection) rating. For outdoor or high-humidity applications, additional encapsulation or potting is recommended to protect the leads and epoxy body from environmental stress.
Q: What is the shelf life of this component, and what does MSL 2 mean?
A: MSL 2 (Moisture Sensitivity Level 2) means the components can be exposed to the factory floor environment (max $30^\circ\text{C}$, 85% RH) for up to 1 year before soldering. If stored in the original sealed bag, the shelf life is indefinite; however, once opened, they must be mounted within 1 year or baked according to IPC/JEDEC standards.
Q: What is the maximum current I can pulse this LED with?
A: The Absolute Maximum Rating for Peak Forward Current ($I_{FP}$) is 80mA. This assumes a pulse duration $\le 10\text{ms}$ and a duty cycle $\le 1/10$. Continuous operation should never exceed 20mA per the datasheet to avoid accelerated degradation.
Q: Are there specific bin codes for wavelength?
A: Yes. The Red wavelength is binned as HR04 (630-635nm) and HR05 (635-640nm), while Blue is binned as HB04 (460-465nm) and HB05 (465-470nm). Procurement should specify these codes if color precision is critical for the application.
